You have two jars and 100 marbles. Fifty of the
marbles are red, and 50 are blue. One of the jars will
be chosen at random, then 1 marble will be withdrawn
from that jar at random. How do you maximize the chance
that a red marble will be chosen? (You must place all 100
marbles in the jars.)What is the chance of selecting
a red marble when using your scheme?